Question about Onkyo TX-DS797 Receiver

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No sound I have noticed that i have had to turn the volume up a little higher than usual latley, but now i get no sound at all. Powers on but no sound, cranked vol up all the way on fm, music distorted, is the amp shot?

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Possible problem will be on the speaker relay ckt. as discussed in onkyo's service bulletin.
"When the speaker relays are activated, the collector of Q231 and Q232 should drop to near 0Vdc. Voltage can be monitored at terminal P6830 and P6832. Q231 supports RL6600, RL6602 and RL6603, where as Q232 supports RL6605 for Zone 2 operation. If the DVC at P6830 collector or its follower terminal is HIGH, it should be an open transistor Q231."

Posted on Nov 13, 2008

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Posted on Jan 02, 2017

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AUDIO


Hey Tex

You are on the right track, sounds like a noisy volume control. Can often be repaired with a squirt of cleaner spray into the potentiometer assembly.But I suggest you use crc2-26 contact lubricant spray, not silicone spray which is a great materials lubricant, but not electrical. Worst case, the Vol Potentiometer, may have to be replaced. Go for the CRC first and see how it goes. Good Luck, happy FixYa

regards
Graeme

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